The circumstances of 21-year-old John Durkin's death are still not clear. Investigators said Durkin was struck by a train, but they are trying to determine what happened before he walked into the train tunnel.

Reporter Matteo Scarlino has been following the investigation for the newspaper Roma Today. He said Italian police are notoriously tight-lipped, but autopsy and toxicology reports are due anytime, and those could help provide some answers.

Scarlino said a timeline has developed of what happened. Friends left Durkin at the popular restaurant and bar Sloppy Sam's at 1:30 a.m. Thursday. The restaurant closes at 2 a.m.

A little while later, a man was seen in surveillance video at St. Pietro's train station walking alone on the tracks. The area is 2.5 miles from the bar, and investigators are 99 percent sure the man was Durkin.

Trains stopped running hours before, at 11:30 p.m., and didn't start again until after 5 a.m. It was around 6:30 a.m. that a train passenger spotted a body inside a tunnel located some distance from St. Pietro station.

The victim did not have any identification.

That same day, Durkin was reported missing. The connection between his disappearance and the man in the train tunnel wasn't made for another day.

His father arrived in Italy and identified his son's body. He was quoted by Italian media, "We want the whole truth."

Scarlino, speaking through an interpreter, said police seem to be focusing on a couple of things.

"They're trying to piece that together, of why he didn't have identification on him and why he walked 3 km," Scarlino said. "He walked from the train station. He walked 3 km. That's where he was hit."

Scarlino said the area is not considered a high-crime location, and the case is unusual.

"I mean, they've had people, like 37, 40 years old be hit by trains, but nothing like this," he said. "It's never happened there."

Durkin's father said he plans to stay in Rome until he can return to Rye with his son.

JENNIFER COMPTON SPOKE WITH A REPORTER AND SHE IS LIVE NOW IN PORTSMOUTH. LEX I SPOKE WITH HIM BY PHONE THROUGH AN INTERPRETER. HE HAS BEEN FOLLOWING THE INVESTIGATION. WAS THIS A HORRIBLE ACCIDENT OR COULD FOUL PLAY HAVE BEEN INVOLVED? HE SAYS NO -- HE SAYS POLICE ARE NOTORIOUSLY TIGHTLIPPED. AUTOPSY AND TOXICOLOGY RESULTS COULD PROVIDE SOME ANSWERS. HIS WAS A LIFE FULL OF LOVE AND LAUGHTER. JUST SOME OF THE MANY WAYS FRIENDS DESCRIBED HIM. HE WAS A 21-YEAR-OLD STUDENT ATHLETE FROM RIGHT STUDYING ABROAD IN ROME. THE ECONOMICS MAJOR OUT WITH FRIENDS LAST WEDNESDAY NIGHT -- THOSE FRIENDS WHO WOULD BE THE LAST TO SEE HIM. WORKING WITH A REPORTER FROM AN ITALIAN NEWSPAPER, WE WERE ABLE TO COMPILE THIS TIMELINE. THEY WERE AT A POPULAR RESTAURANT THAT CLOSED AT 2:00 IN THE MORNING. A LITTLE WHILE LATER, A MAN WAS SEEN ON SURVEILLANCE VIDEO WALKING ALONE ON THE TRACKS. INVESTIGATORS ARE 99% SURE THE MAN IS DURGIN. TRAINS TOPPED RUNNING HOURS BEFORE AND DID NOT START AGAIN UNTIL AFTER 5:00 WILL STOP IT WAS AROUND 6:00 THAT PASSENGERS SPOTTED A BODY INSIDE A TUNNEL. THE VICTIM DID NOT HAVE ANY ID. THAT SAME DAY, HE WAS REPORTED MISSING. THE CONNECTION BETWEEN THE DISAPPEARANCE AND THE MAN IN THE TRAIN TUNNEL WAS NOT MADE FOR ANOTHER DAY. HIS FATHER ARRIVED IN ITALY AND IDENTIFIED HIS SONS BODY. HE'S QUOTED BY THE ITALIAN PRESS SAYING WE WANT THE WHOLE TRUTH. THE REPORTER WE SPOKE WITH SAID POLICE SEEM TO BE FOCUSING ON A COUPLE OF THINGS. THEY ARE TRYING TO PIECE TOGETHER WHY HE DID NOT HAVE ANY IDENTIFICATION ON HIM AND WHY HE WALKED THREE KILOMETERS FROM THE TRAIN STATION -- THAT'S WHERE HE WAS HIT. THE AREA IS NOT CONSIDERED HIGH CRIME AND THE CASE IS UNUSUAL. THEY HAVE PEOPLE HIT BY TRAINS BUT NOTHING LIKE THIS. IT HAS NEVER HAPPENED HERE. JOHN'S FATHER WILL STAY IN